Everybody feels sad once in a while. Depression, on the other hand, is a complex condition characterized by profound sadness, lethargy, feelings of worthlessness, and a loss of interest in social activities. About 15 million people in the U.S. are diagnosed with clinical depression each year.

Blogging Helped Me Cope

After suffering from untreated depression for over 20 years, Deborah Gray, 45, of Berkeley, Calif., is coping by helping others suffering with the same disease

Depression Isn't Dementia

Your elderly parents need you to tell the difference

Cindy-Lee Dennis On PPD

Get bottom-line answers on postpartum depression

The Best Therapy for Depression?

Read why evidence is pointing toward CBT

Yup, Therapy Is Expensive. Here's Help

Why the cost of not getting treatment can be catastrophic

Barry Jacobs on Careful Caregiving

How to make sure you stay sane while your loved one recovers